"US airlines flight 38 with service from Miami to London returned to MIA due to a disruptive customer refusing to comply with the federal mask requirement," the airline said.
Police were waiting when the Boeing 777 carrying 129 passengers and a crew of 14 landed back in Miami.
When the plane landed police escorted that passenger off the plane without any incident officials said.
American Airlines said that pending further investigation this passenger has been placed on a list of people barred from flying with the airline.
The Federal Aviation Administration said in January 2021 it would observe a zero tolerance policy toward people who reject federal rules mandating mask-wearing on US domestic flights.
This came as flight attendants reported a high number of incidents of verbal and physical abuse from travelers who refuse to wear a mask.
-B